US inflation reportedly reached 3.7% in September, up from 3.4% a month earlier

CPI tracks prices paid by consumers, while PPI measures what producers receive for goods and services. They are different gauges, but the sharp increases in both showed inflationary pressure moving through more than one part of the economy.

Why the figures became political

The official releases establish the size and composition of the increases; they do not assign political blame. The attached posts go further. One post disputes President Donald Trump's claim that inflation had fallen to 1.7%, while another blames tariffs and the war in Iran for the producer-price jump. Those are political interpretations, not conclusions from BLS.

Reuters reported that the U.S.-Israeli war with Iran was keeping energy prices elevated and that some goods categories showed signs of tariff pass-through. Its producer-price coverage also found that inflation was broadening beyond energy: wholesale food and services prices rose, and trade-service margins increased.

The hotter data complicated the Federal Reserve's next move without deciding it. Reuters said market-implied odds of an October rate increase rose after the CPI release, but most economists still expected the Fed to hold rates steady that month and raise them in December.